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Recent content by Arya Kumar

  1. A

    40 pin TFT Backlight turn up

    Hello all, Thanks for your previous input on Oscillator Circuit. I am making a proto-board, which i have done taking base board design from Stm32f429zit6 Discovery Board. I am using a different tft from that of Discovery board. Right now i am validating all peripherals, I am facing issue in...
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    Use of this resistor in oscillator of Stm32f429zit6 Discovery development board

    Hello all can you let me know usage of this resistor in stm32f429zit6 discovery development board. Link of datasheet https://www.st.com/content/ccc/resource/technical/document/user_manual/6b/25/05/23/a9/45/4d/6a/DM00093903.pdf/files/DM00093903.pdf/jcr:content/translations/en.DM00093903.pdf...
  3. A

    Mosfet with open ground and source.

    ok i have just modeled Switch with some external circuits which can be in high impedance state. Just because the source is in high impedance state and i need ground to create Vgs , to ON the mosfet. My problem is i dont get ground due to high impedence circuit. I see in google people use diode...
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    Mosfet with open ground and source.

    Hello, Generally i place mosfet with Source connected to ground and do negetive switching. But i am coming across a problem when there will be circuitry after ground.(So i cannot connect my Mosfet Source to ground) I see people put a diode. Is it the solution, Please verify This is the problem...
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    Interfacing MCP2317 with atmega8

    OOPs Ok i will edit the post. - - - Updated - - - I have attached 1.zip that contains code with PIC controller and it works fine, and then i ported it to AVR(atmega8) and it is in 2.zip. Most of the algo is same as in PIC to AVR. But I see no response of MCP2317 to SPI msgs when trying with...
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    Interfacing MCP2317 with atmega8

    #include "SPI.h" //sbit Chip_Select at PORTB0_bit; //sbit Chip_Select_Direction at DDB0_bit; #define reset PORTB.f1 #define CS PORTB.f0 //------------------------------------------------------------------------------------------------- // porta A unsigned char const MCP2317_IODIRA =...
  7. A

    understanding Mosfet driver circuit

    As you have said in second paragraph yes i know well that Power = V X I ,and if current is more and v is near zero power loss in heat is near zero (when mosfet is on), and viceversa when mosfet if off. The concern is during the switching time where both quatity p=V X I is max, if we reduce...
  8. A

    understanding Mosfet driver circuit

    Hello Dick_free_bird i choose some value of 9.1K ohm and 9.1 Kohm resistor as i had a 12 volt source and i wanted to create 5 volt Vgs. I choose any value in K ohm so i don't sink current. As with your comments i feel large value of resistor will reduce current sink of BJT and will create...
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    understanding Mosfet driver circuit

    @sribf Thanks sribf , you have explained it very well. And i am now clear with the circuit. As abc_de and other resource in internet says use ir2110. Does IR2110 have similar circuit build in? And taking cost into consideration and for normal application what is your take in choosing the...
  10. A

    understanding Mosfet driver circuit

    please correct to my undertanding , As u said i will have in Vgs (eg 5 volt input then 5 - 0.7). But Ic is still zero(there is nothing to worry about Ic being zero). But what is the use of the configuration. We could have directly given it. After writing this reply i will search in google...
  11. A

    Modify and build aruino library again

    Okada thanks for ur info. I found a better way, i am using eclipse for arduino and there i can directly open the libaray in c++ and can compile. thanks Okada
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    understanding Mosfet driver circuit

    This is the circuit which i used to make for mosfet driving. It used to work fine. But i then heared about Miller effect in mosfet. And then i heared about mosfet driver IC. "1R2110" Which takes care of miller capacitance. (By providing a negetive current when turning off?? i am not clear). I...
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    Modify and build aruino library again

    OK u mean copy all content from .h and .cpp and paste it in arduio. and also click on new tab..give the file name and keep saving all depenent files. And how to build it cos all files are linked to each other. I am still not clear, If u have link.. or need more info...anyway i am trying my own
  14. A

    Modify and build aruino library again

    Hello, I have an arduino and i wanted to interface IR sensor with it. i got this library in GITHUB https://github.com/z3t0/Arduino-IRremote i want to make some changes and recompile the library for arduino, I dont know how to open the project and compile. Arduino IDE opens only INO and .pde...
  15. A

    Interfacing mcp3422 with microcontroller

    I know it must not be 5 volt. But as of now i just want any value other than zero on the I2c bus. I have changed it to other levels still it return zero. I dont know but above link is banned in India
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